Multifunctional portable power source



FIG. 1 is a perspective view of a multifunctional portable power source showing my new ornamental design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown in the drawings illustrate portions of the multifunctional portable power source which form no part of the claimed design. 

CLAIM The ornamental design for a multifunctional portable power source, as shown and described. 